Dissipation in the superconducting state of κ- (BEDT-TTF)2 Cu (NCS)2

Liang Yin, Moon Sun Nam, James G. Analytis, Stephen J. Blundell, Arzhang Ardavan, John A. Schlueter, Takahiko Sasaki

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1 Citation (Scopus)

Abstract

We have studied the interlayer resistivity of the prototypical quasi-two-dimensional organic superconductor κ- (BEDT-TTF)2 Cu (NCS)2 as a function of temperature, current, and magnetic field, within the superconducting state. We find a region of nonzero resistivity whose properties are strongly dependent on magnetic field and current density. There is a crossover to non-Ohmic conduction below a temperature that coincides with the two-dimensional vortex solid-vortex liquid transition. We interpret the behavior in terms of a model of current- and thermally driven phase slips caused by the diffusive motion of the pancake vortices which are weakly coupled in adjacent layers, giving rise to a finite interlayer resistance.

Original languageEnglish
Article number014506
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number1
DOIs
Publication statusPublished - 2007 Jul 16

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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